A Phase II Study of Acalabrutinib in Combination With R-CHOP Chemotherapy in Previously Untreated Mantle Cell Lymphoma
This is a multicenter, open-label, non-randomized, phase II clinical trial conducted in Canada. The purpose of the study is to determine the remission rate of acalabrutinib in combination with R-CHOP in patients with previously untreated mantle cell lymphoma prior to autologous stem cell transplantation. This study is composed of 2 cohorts, A and B. In Cohort A all patients will receive six cycles of R-CHOP chemotherapy together with continuous acalabrutinib at the standard dose twice per day orally. All patients will undergo response assessment at the end of six cycles of R-CHOP + acalabrutinib with CT scan, PET/CT scan, and bone marrow biopsy. Responding patients will proceed with stem cell mobilization, apheresis, and processing. Following ASCT, patients will receive standard maintenance rituximab every 3 months for 2 years. Enrollment for Cohort A component of the study has been completed. Cohort B, involves using acalabrutinib with R-CHOP (same as Group A) but without an autologous stem cell transplant (ASCT) as part of the regimen. The study doctors hope to evaluate how participants respond to the treatment in terms of the time between treatment initiation and time when stable disease is achieved. The enrollment for cohort B is currently ongoing.
• Men and women greater than or equal to 18 years of age deemed eligible for treatment with Full dose RCHOP and ASCT by the qualified investigator.
• Histologic diagnosis of MCL according to the World Health Organization classification \[Swerdlow, Blood 2016\].
• Previously untreated MCL with the following exceptions: (a) prior radiotherapy for localized disease, (b) up to 7 days of corticosteroids (prednisone 100mg/day equivalent), (c) up to one dose of single-agent chemotherapy (for example, cyclophosphamide), (d) up to one cycle of R-CHOP if last R-CHOP is between 21 days and 2 months from start of RCHOP+acalabrutinib or up to one cycle ofbendamustine-rituximab (BR) if BR is between 28 days and 2 months from start of RCHOP+acalabrutinib. Patients with exceptions (c) and (d) are eligible as long as all other eligibility criteria are met AND at least a CT scan and bone marrow biopsy were performed prior to chemotherapy.
• Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2.
• Presence of at least one radiologically measurable nodal or extranodal mass. A measurable nodal mass must have a longest diameter ≥1.5 cm. A measurable extranodal mass should have a longest diameter ≥1.0 cm.\[Cheson, JCO 2014\]
• Women of childbearing potential (WOCBP) who are sexually active must use highly effective methods of contraception during treatment and up to 12 months after the last dose of rituximab or R-CHOP, or 2 days after the last dose of acalabrutinib, whichever is last administered. Examples of highly effective contraceptive methods include an agreement to remain abstinent (ie, refrain from heterosexual intercourse), bilateral tubal ligation, male sterilization, established proper use of hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices, and copper intrauterine devices. Men who are sexually active must use highly effective methods of contraception during treatment and up to 6 months after the last dose of rituximab or R-CHOP, or 2 days after the last dose of acalabrutinib, whichever is last administered. Men require an agreement to remain abstinent (ie, refrain from heterosexual intercourse) or use a condom, and an agreement to refrain from donating sperm. Periodic abstinence and withdrawal are not acceptable methods of contraception. Fertility preservation options should be discussed.
• Willing and able to participate in all required evaluations and procedures in this study protocol including swallowing capsules without difficulty.
• Ability to understand the purpose and risks of the study and provide signed and dated informed consent and authorization to use protected health information.
⁃ Eligible subjects will be considered for inclusion in Cohort B of this study if they meet all of the following criteria:
• Men and women 18-70 years of age deemed eligible for treatment with full dose RCHOP by the qualified investigator.
• Histologic diagnosis of MCL according to the World Health Organization classification \[Swerdlow, Blood 2016\].
• Previously untreated MCL with the following exceptions: (a) prior radiotherapy for localized disease, (b) up to 7 days of corticosteroids (prednisone 100mg/day equivalent), (c) up to one dose of single-agent chemotherapy (for example, cyclophosphamide), (d) up to one cycle of R-CHOP if last R-CHOP is between 21 days and 2 months from start of R-CHOP+acalabrutinib. Other chemotherapy regimens (for example, bendamustine and rituximab) are not allowed. Patients with exceptions (c) and (d) are eligible as long as all other eligibility criteria are met AND at least a CT scan and bone marrow biopsy were performed prior to chemotherapy.
• Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2.
• Presence of at least one radiologically measurable nodal or extranodal mass. A measurable nodal mass must have a longest diameter ≥1.5 cm. A measurable extranodal mass should have a longest diameter ≥1.0 cm.\[Cheson, JCO 2014\]
• Women of childbearing potential (WOCBP) who are sexually active must use highly effective methods of contraception during treatment and up to 12 months after the last dose of rituximab or R-CHOP, or 2 days after the last dose of acalabrutinib, whichever is last administered. Examples of highly effective contraceptive methods include an agreement to remain abstinent (ie, refrain from heterosexual intercourse), bilateral tubal ligation, male sterilization, established proper use of hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices, and copper intrauterine devices. Men who are sexually active must use highly effective methods of contraception during treatment and up to 6 months after the last dose of rituximab or R-CHOP, or 2 days after the last dose of acalabrutinib, whichever is last administered. Men require an agreement to remain abstinent (ie, refrain from heterosexual intercourse) or use a condom, and an agreement to refrain from donating sperm. Periodic abstinence and withdrawal are not acceptable methods of contraception. Fertility preservation options should be discussed.
• Willing and able to participate in all required evaluations and procedures in this study protocol including swallowing capsules or tablets without difficulty.
• Ability to understand the purpose and risks of the study and provide signed and dated informed consent and authorization to use protected health information